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Removed temporary memory from the API

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It was intended to make the API easier to use, but various automatic garbage collection all had flaws, and making the application periodically clean up temporary memory added cognitive load to using the API, and in many cases was it was difficult to restructure threaded code to handle this.

So, we're largely going back to the original system, where the API returns allocated results and you free them.

In addition, to solve the problems we originally wanted temporary memory for:
* Short strings with a finite count, like device names, get stored in a per-thread string pool.
* Events continue to use temporary memory internally, which is cleaned up on the next event processing cycle.
This commit is contained in:
Sam Lantinga
2024-07-26 18:57:18 -07:00
parent 21411c6418
commit 4f55271571
100 changed files with 737 additions and 853 deletions
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6
include/SDL3/SDL_stdinc.h
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@@ -527,9 +527,9 @@ extern "C" {
#define SDL_stack_free(data) SDL_free(data)
#endif
extern SDL_DECLSPEC SDL_MALLOC void * SDLCALL SDL_malloc(size_t size);
extern SDL_DECLSPEC SDL_MALLOC SDL_ALLOC_SIZE2(1, 2) void * SDLCALL SDL_calloc(size_t nmemb, size_t size);
extern SDL_DECLSPEC SDL_ALLOC_SIZE(2) void * SDLCALL SDL_realloc(void *mem, size_t size);
extern SDL_DECLSPEC_FREE SDL_MALLOC void * SDLCALL SDL_malloc(size_t size);
extern SDL_DECLSPEC_FREE SDL_MALLOC SDL_ALLOC_SIZE2(1, 2) void * SDLCALL SDL_calloc(size_t nmemb, size_t size);
extern SDL_DECLSPEC_FREE SDL_ALLOC_SIZE(2) void * SDLCALL SDL_realloc(void *mem, size_t size);
extern SDL_DECLSPEC void SDLCALL SDL_free(void *mem);
typedef void *(SDLCALL *SDL_malloc_func)(size_t size);